Semiconductor optical amplifier with electronically...

Details Semiconductor optical amplifier with electronically... Semiconductor optical amplifier with electronically...

2005-05-10

2005-05-10

Hellner, Mark (Department: 3663)

Optical: systems and elements

Optical amplifier

Particular active medium

Reexamination Certificate

active

06891666

ABSTRACT:
An optical amplifier has two amplifying sections formed in a semiconductor structure. The two amplifying sections have different ratios of gain for two polarization states (e.g., TE and TM). Thus the amplifier as a whole has a gain ratio determined by the gains of the two amplifying sections. The two amplifying sections are separately electronically controllable so as to control the gains of the two amplifying sections and thus the gain ratio of the amplifier as a whole. Such an amplifier can be made by quantum well intermixing.

REFERENCES:
patent: 4918701 (1990-04-01), Amann et al.
patent: 5223972 (1993-06-01), Nishimura et al.
patent: 6487007 (2002-11-01), Morito
patent: 6549331 (2003-04-01), Walker et al.

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